A: "Hello, this is Mary. Can I speak to John, please?"
B: "I'm sorry, he's not available right now. He's out."
A: "___________________"
B: "Sure, I'll tell him."
Which of the following completes the conversation best?
A) Can I call him later? B) Can I leave a message? C) When will he be back? D) What's his phone number?
